39754051548989 has 2 divisors, whose sum is σ = 39754051548990. Its totient is φ = 39754051548988.

The previous prime is 39754051548947. The next prime is 39754051549007. The reversal of 39754051548989 is 98984515045793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30371672102500 + 9382379446489 = 5511050^2 + 3063067^2 .

It is a cyclic number.

It is not a de Polignac number, because 39754051548989 - 2⁴⁴ = 22161865504573 is a prime.

It is a super-2 number, since 2×39754051548989² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39754051148989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19877025774494 + 19877025774495.

It is an arithmetic number, because the mean of its divisors is an integer number (19877025774495).

Almost surely, 2^{39754051548989} is an apocalyptic number.

It is an amenable number.

39754051548989 is a deficient number, since it is larger than the sum of its proper divisors (1).

39754051548989 is an equidigital number, since it uses as much as digits as its factorization.

39754051548989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1959552000, while the sum is 77.

The spelling of 39754051548989 in words is "thirty-nine trillion, seven hundred fifty-four billion, fifty-one million, five hundred forty-eight thousand, nine hundred eighty-nine".